· Web viewsteel SB450 steel plate, JIS3103SB450 steel plates is a kind of material for boiler and pressure vessel steel. JIS3103SB450 steel plates is characterized by a minimum yield strength of 220 - 295 MPa and by good weldability, so SB450 steel is mainly used to for manufacturing boilers, pressure vessels and pipes transporting hot liquids. the following are JIS3103SB450 steel plate's Chemical ...